Vaillant ecotec 837 hot water problems

[Aire]

Hi guys, currently at the above boiler with no hot water. Plate gets hot so preheat is working but when I open a hot tap nothing happens, no tap symbol or anything.

The customer did say that when they was having some ground works done and the mains was accidentally cut and a fair bit of sand and much got flushed into the system and hot water hasn't worked since.

Any ideas?

 

[Aire]

I should also add i have no signal to ring vaillant and using a public Wi-Fi hotspot to get online

 

[Scott_D]

No water at all or no hot water?

 

[Harvest Fields]

Filter/diverter?

 

[ShaunCorbs]

Flow switch ?

If you get no tap symbol it’s not sending the flow

 

[Harvest Fields]

Flow switch ?

If you get no tap symbol it’s not sending the flow

That’s why I would check the filter not had many flow switch’s go.

 

[Aire]

Managed to get a signal and ran though it with technical and they reccomended flow sensor. Which when you think about it makes sense, Shaun said, no tap symbol so it's not picking up demand is required.

I really need to get myself on a few installer courses, I did strip the flow sensor initially and tried to clean it but then spent another 2 hours stripping the diverter and cleaning the plate just in case any muck was causing an issue

Anyway I've got a new flow sensor coming tomorrow so hopefully that cures it.

 

[Aire]

That’s why I would check the filter not had many flow switch’s go.

Wheres the filter?

 

[Aire]

Just so we're on the same page, the flow sensor on this model is the turbine type.

 

[ShaunCorbs]

That’s why I would check the filter not had many flow switch’s go.

That would give you no flow out of the hot tap / low flow

 

[Harvest Fields]

Wheres the filter?

My bad. Sorry. Thinking of wrong boiler.

 

[Harvest Fields]

That would give you no flow out of the hot tap / low flow

Clearly having a bad day.

 

[ShaunCorbs]

Clearly having a bad day.

Swap you can first fix 7 bathrooms with Rubbish pipes

 

[Harvest Fields]

Swap you can first fix 7 bathrooms with **** pipes

No thanks. I’ll stick with the rubbish performa that’s giving me c**p